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If the mass percent of oxygen in Na2Cr2O7 is 42.8%, what is the mass of oxygen...

If the mass percent of oxygen in Na2Cr2O7 is 42.8%, what is the mass of oxygen atoms in grams in 14.4 grams of Na2Cr2O7?

For your answer, only type in the numerical value with three significant figures. Do NOT include the unit.

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Mass of oxygen in grams with three significant figures is : 6.16Given mass peocent of oxygen in Na co z = I total - In atomic mass of Na₂C%207 oxygen -Xoo atomic mass of Na.c6..o 22 = 42-87- Uy Uzut 1314.4g. then massob oxygen- mass Percent of oxygen x mass of Naco07 100% 42.8%. X 100oX 14.4 g Ž 6.16 a C3-signifi

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